#learning_task_1, 
#learning_task_2,
#learning_task_3,
#learning_task_4,
#learning_task_5,
#learning_task_6 {
    padding: 2rem;
    background-color: white;
    margin: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}


/* Markdown 卡片样式 */
.markdown-card {
    width: calc(100% - 250px);
    max-width: 1000px; /* 限制最大宽度 */
    padding: 1rem 2rem;
    background-color: white;
    overflow: hidden; /* 避免整体溢出 */
    margin: 0 auto;
    border-radius: 12px;
    height: calc(100vh - 120px); /* 全屏减去导航栏和页脚 */
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.markdown-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* 内容区域样式 */
.markdown-card .card_content {
    width: 100%;
    height: calc(100vh - 180px);
    max-height: none; /* 限制最大高度 */
    overflow-y: auto; /* 溢出时滚动 */
    line-height: 1.8;
    padding: 0.6rem 1rem;
}

/* 标题样式 */
.markdown-card .card_content h1,
.markdown-card .card_content h2,
.markdown-card .card_content h3 {
    color: #2E5AAC;
    border-left: 4px solid #2E5AAC;
    padding-left: 1rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

/* 代码块样式 */
.markdown-card .card_content pre {
    background-color: #f0f0f0;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}

.markdown-card .card_content code {
    background-color: #f8f9fa;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-family: monospace;
}

/* 链接样式 */
.markdown-card .card_content a {
    color: #2E5AAC;
    text-decoration: underline;
}

/* 列表样式 */
.markdown-card .card_content ul,
.markdown-card .card_content ol {
    padding-left: 1.5rem;
}

.markdown-card .card_content li {
    margin-bottom: 0.5rem;
}